Re: Efficient searching of an NSArray of NSDictionary
Re: Efficient searching of an NSArray of NSDictionary
- Subject: Re: Efficient searching of an NSArray of NSDictionary
- From: "I. Savant" <email@hidden>
- Date: Tue, 29 Sep 2009 13:10:20 -0400
On Sep 29, 2009, at 12:53 PM, Oftenwrong Soong wrote:
IIUC, what you're saying is that NSPredicate is used as a filter. Is
that correct?
Well, it's more of a (unit of a) query. You can create compound
predicates, etc. to build a more complex query.
If so, is Predicate Editor (in IB) related in some way?
Well ... yes ... it is an editor control for predicates. :-)
And if so, what is it supposed to do? Honestly I could never
understand the docs on this particular control. :)
If you have specific questions, you need to ask those instead of
"what is it supposed to do"?
What don't you understand? The Overview section of the
NSPredicateEditor reference is incredibly clear. The very first
sentence even tells you what it's a subclass of, which, if you follow
the link and read *its* overview, will give you even more information.
Further, the related "Companion Guide" about predicates is highly
relevant.
Are you saying you're unsure how to actually use it / set it up? I
*think* that's covered between it and its superclass's documentation,
but admittedly I've never read in depth for that specific information.
--
I.S.
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